var common = {
    request: {
        getParam: function (name) {
            var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
            var r = window.location.search.substr(1).match(reg);
            if (r != null) {
                return unescape( r[2]);
            }
            else{
                return null;
            }
        }
    }
}